Click on the third or sixth rank to set the en passant target square.

EGTB: win in 4 half-moves

# move score
1 Rg7 win in 3 half-moves
2 Rb2 draw
3 Rd2 draw
4 Re2 draw
5 Rf2 draw
6 Rg3 draw
7 Rg4 draw
8 Rg5 draw
9 Rg6 draw
10 Rg8 draw
11 f7 loss in 2 half-moves
12 Ra2 loss in 2 half-moves
13 Rc2 loss in 2 half-moves
14 Rg1 loss in 2 half-moves
15 Rh2 loss in 2 half-moves